flexfax: dictstackunderflow

[hlc@guidegruppen.dk]

Hi.
I have just intalled Hylafax under Linux (REDHAT 6.1)
hylafax-4.1beta1-1rh6.i386.rpm.

With some documents , just plain ascii- txt the fax is not send 

I use sendfax -n -d xxxxxx filename

>From faxstat -d I get the following

JID  Pri S  Owner Number       Pages Dials     TTS Status
26   127 D progre xxxxxxx        0:0   0:12         Error:
/dictstackunderflo

I have x'et out our Fax number.
Other dokuments work well .

Do somebody have a clue to what's happening..